Guinea, Sierra Leone, and Liberia were in the news for the outbreak of the Ebola virus. The most widespread outbreak of the Ebola virus disease began in 2013 and continued until 2016, causing major loss of life and socio-economic disruption in the West African region, mainly in the countries of Guinea, Liberia, and Sierra Leone.
The first cases were recorded in Guinea in December 2013. Later, the disease spread to neighboring Liberia and Sierra Leone. Therefore, option B is the correct answer.